(19)
(11) EP 0 967 194 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.10.2000 Bulletin 2000/40

(43) Date of publication A2:
29.12.1999 Bulletin 1999/52

(21) Application number: 99110126.2

(22) Date of filing: 25.05.1999
(51) International Patent Classification (IPC)7: C07C 409/16
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 04.06.1998 IT MI981250

(71) Applicant: Elf Atochem Italia S.r.l.
Milano (IT)

(72) Inventors:
  • Montessoro, Ezio
    Tortona, Alessandria (IT)
  • Merenda, Michele
    Alessandria (IT)

(74) Representative: Sama, Daniele, Dr. 
Sama Patents Via Morgagni, 2
20129 Milano
20129 Milano (IT)


(56) References cited: : 
   
       


    (54) Preparation of di-tert-peroxides


    (57) A process for the di-ter-peroxide synthesis, wherein the condensation reaction between a tertiary hydroperoxide and a tertiary alcohol is carried out in the presence of an acid catalyst, constituted by a compound having a mono-sulphonated aromatic ring selected from the following formulae: wherein: R is an alkyl group having from 2 to 9 carbon atoms, preferably from 2 to 6; R'and R'' are alkyl groups having a number of from 1 to 9 carbon atoms, preferably from 1 to 6.






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